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Finding the Fourth Proportional to 6,768.70, 9,339.96 and 3,784.42

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Solution

The fourth proportional to 6,768.70, 9,339.96 and 3,784.42 is: 5,222.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,768.70 : 9,339.96 = 3,784.42 : x
  2. Step 2: Convert to fraction form
    6,768.70/9,339.96 = 3,784.42/x
  3. Step 3: Cross multiply
    6,768.70x = 9,339.96 × 3,784.42
  4. Step 4: Simplify right side
    6,768.70x = 35,346,331.42
  5. Step 5: Solve for x
    x = 35,346,331.42/6,768.70
  6. Step 6: Final answer
    x = 5,222.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.